1 /*
2 * Copyright (c) 1983, 1989, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#) Copyright (c) 1983, 1989, 1993, 1994 The Regents of the University of California. All rights reserved.
30 * @(#)newfs.c 8.13 (Berkeley) 5/1/95
31 * $FreeBSD: src/sbin/newfs/newfs.c,v 1.30.2.9 2003/05/13 12:03:55 joerg Exp $
32 */
33
34 /*
35 * newfs: friendly front end to mkfs
36 */
37 #include <sys/param.h>
38 #include <sys/stat.h>
39 #include <sys/diskslice.h>
40 #include <sys/mount.h>
41 #include <sys/sysctl.h>
42
43 #include <vfs/ufs/dir.h>
44 #include <vfs/ufs/dinode.h>
45 #include <vfs/ufs/fs.h>
46 #include <vfs/ufs/ufsmount.h>
47
48 #include <ctype.h>
49 #include <err.h>
50 #include <errno.h>
51 #include <fcntl.h>
52 #include <mntopts.h>
53 #include <inttypes.h>
54 #include <paths.h>
55 #include <stdio.h>
56 #include <stdlib.h>
57 #include <string.h>
58 #include <syslog.h>
59 #include <unistd.h>
60 #include <disktab.h>
61
62 #ifdef MFS
63 #include <sys/types.h>
64 #include <sys/mman.h>
65 #endif
66
67 #include <stdarg.h>
68
69 #include "defs.h"
70
71 struct mntopt mopts[] = {
72 MOPT_STDOPTS,
73 MOPT_ASYNC,
74 MOPT_NULL,
75 };
76
77 void fatal(const char *fmt, ...) __dead2 __printflike(1, 2);
78
79 #define COMPAT /* allow non-labeled disks */
80
81 /*
82 * The following two constants set the default block and fragment sizes.
83 * Both constants must be a power of 2 and meet the following constraints:
84 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE
85 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE
86 * DESBLKSIZE / DESFRAGSIZE <= 8
87 */
88 #define DFL_FRAGSIZE 2048
89 #define DFL_BLKSIZE 16384
90
91 /*
92 * Cylinder groups may have up to many cylinders. The actual
93 * number used depends upon how much information can be stored
94 * on a single cylinder. The default is to use as many as possible
95 * cylinders per group.
96 */
97 #define DESCPG 65536 /* desired fs_cpg ("infinity") */
98
99 /*
100 * Once upon a time...
101 * ROTDELAY gives the minimum number of milliseconds to initiate
102 * another disk transfer on the same cylinder. It is used in
103 * determining the rotationally optimal layout for disk blocks
104 * within a file; the default of fs_rotdelay is 4ms.
105 *
106 * ...but now we make this 0 to disable the rotdelay delay because
107 * modern drives with read/write-behind achieve higher performance
108 * without the delay.
109 */
110 #define ROTDELAY 0
111
112 /*
113 * MAXBLKPG determines the maximum number of data blocks which are
114 * placed in a single cylinder group. The default is one indirect
115 * block worth of data blocks.
116 */
117 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t))
118
119 /*
120 * Each file system has a number of inodes statically allocated.
121 * We allocate one inode slot per NFPI fragments, expecting this
122 * to be far more than we will ever need.
123 */
124 #define NFPI 4
125
126 /*
127 * Once upon a time...
128 * For each cylinder we keep track of the availability of blocks at different
129 * rotational positions, so that we can lay out the data to be picked
130 * up with minimum rotational latency. NRPOS is the default number of
131 * rotational positions that we distinguish. With NRPOS of 8 the resolution
132 * of our summary information is 2ms for a typical 3600 rpm drive.
133 *
134 * ...but now we make this 1 (which essentially disables the rotational
135 * position table because modern drives with read-ahead and write-behind do
136 * better without the rotational position table.
137 */
138 #define NRPOS 1 /* number distinct rotational positions */
139
140 /*
141 * About the same time as the above, we knew what went where on the disks.
142 * no longer so, so kill the code which finds the different platters too...
143 * We do this by saying one head, with a lot of sectors on it.
144 * The number of sectors are used to determine the size of a cyl-group.
145 * Kirk suggested one or two meg per "cylinder" so we say two.
146 */
147 #define NTRACKS 1 /* number of heads */
148 #define NSECTORS 4096 /* number of sectors */
149
150 int mfs; /* run as the memory based filesystem */
151 char *mfs_mtpt; /* mount point for mfs */
152 struct stat mfs_mtstat; /* stat prior to mount */
153 int Lflag; /* add a volume label */
154 int Nflag; /* run without writing file system */
155 int Oflag; /* format as an 4.3BSD file system */
156 int Cflag; /* copy underlying filesystem (mfs only) */
157 int Uflag; /* enable soft updates for file system */
158 int Eflag; /* erase contents using TRIM */
159 uint64_t slice_offset; /* Pysical device slice offset */
160 u_long fssize; /* file system size */
161 int ntracks = NTRACKS; /* # tracks/cylinder */
162 int nsectors = NSECTORS; /* # sectors/track */
163 int nphyssectors; /* # sectors/track including spares */
164 int secpercyl; /* sectors per cylinder */
165 int trackspares = -1; /* spare sectors per track */
166 int cylspares = -1; /* spare sectors per cylinder */
167 int sectorsize; /* bytes/sector */
168 int realsectorsize; /* bytes/sector in hardware */
169 int rpm; /* revolutions/minute of drive */
170 int interleave; /* hardware sector interleave */
171 int trackskew = -1; /* sector 0 skew, per track */
172 int headswitch; /* head switch time, usec */
173 int trackseek; /* track-to-track seek, usec */
174 int fsize = 0; /* fragment size */
175 int bsize = 0; /* block size */
176 int cpg = DESCPG; /* cylinders/cylinder group */
177 int cpgflg; /* cylinders/cylinder group flag was given */
178 int minfree = MINFREE; /* free space threshold */
179 int opt = DEFAULTOPT; /* optimization preference (space or time) */
180 int density; /* number of bytes per inode */
181 int maxcontig = 0; /* max contiguous blocks to allocate */
182 int rotdelay = ROTDELAY; /* rotational delay between blocks */
183 int maxbpg; /* maximum blocks per file in a cyl group */
184 int nrpos = NRPOS; /* # of distinguished rotational positions */
185 int avgfilesize = AVFILESIZ;/* expected average file size */
186 int avgfilesperdir = AFPDIR;/* expected number of files per directory */
187 int bbsize = BBSIZE; /* boot block size */
188 int sbsize = SBSIZE; /* superblock size */
189 int mntflags = MNT_ASYNC; /* flags to be passed to mount */
190 int t_or_u_flag = 0; /* user has specified -t or -u */
191 caddr_t membase; /* start address of memory based filesystem */
192 char *filename;
193 u_char *volumelabel = NULL; /* volume label for filesystem */
194 #ifdef COMPAT
195 char *disktype;
196 int unlabeled;
197 #endif
198
199 char mfsdevname[256];
200 char *progname;
201
202 static void usage(void);
203 static void mfsintr(int signo);
204
205 int
main(int argc,char ** argv)206 main(int argc, char **argv)
207 {
208 int ch, i;
209 struct disktab geom; /* disk geometry data */
210 struct stat st;
211 struct statfs *mp;
212 int fsi = -1, fso = -1, len, n, vflag;
213 char *s1, *s2, *special;
214 const char *opstring;
215 #ifdef MFS
216 struct vfsconf vfc;
217 int error;
218 #endif
219
220 bzero(&geom, sizeof(geom));
221 vflag = 0;
222 if ((progname = strrchr(*argv, '/')))
223 ++progname;
224 else
225 progname = *argv;
226
227 if (strstr(progname, "mfs")) {
228 mfs = 1;
229 Nflag++;
230 }
231
232 opstring = mfs ?
233 "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" :
234 "L:NEOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:";
235 while ((ch = getopt(argc, argv, opstring)) != -1) {
236 switch (ch) {
237 case 'E':
238 Eflag = 1;
239 break;
240 case 'L':
241 volumelabel = optarg;
242 i = -1;
243 while (isalnum(volumelabel[++i]))
244 ;
245 if (volumelabel[i] != '\0')
246 errx(1, "bad volume label. Valid characters are alphanumerics.");
247 if (strlen(volumelabel) >= MAXVOLLEN)
248 errx(1, "bad volume label. Length is longer than %d.",
249 MAXVOLLEN);
250 Lflag = 1;
251 break;
252 case 'N':
253 Nflag = 1;
254 break;
255 case 'O':
256 Oflag = 1;
257 break;
258 case 'C':
259 Cflag = 1; /* MFS only */
260 break;
261 case 'S':
262 if ((sectorsize = atoi(optarg)) <= 0)
263 fatal("%s: bad sector size", optarg);
264 break;
265 #ifdef COMPAT
266 case 'T':
267 disktype = optarg;
268 break;
269 #endif
270 case 'F':
271 filename = optarg;
272 break;
273 case 'U':
274 Uflag = 1;
275 break;
276 case 'a':
277 if ((maxcontig = atoi(optarg)) <= 0)
278 fatal("%s: bad maximum contiguous blocks",
279 optarg);
280 break;
281 case 'b':
282 if ((bsize = atoi(optarg)) < MINBSIZE)
283 fatal("%s: bad block size", optarg);
284 break;
285 case 'c':
286 if ((cpg = atoi(optarg)) <= 0)
287 fatal("%s: bad cylinders/group", optarg);
288 cpgflg++;
289 break;
290 case 'd':
291 if ((rotdelay = atoi(optarg)) < 0)
292 fatal("%s: bad rotational delay", optarg);
293 break;
294 case 'e':
295 if ((maxbpg = atoi(optarg)) <= 0)
296 fatal("%s: bad blocks per file in a cylinder group",
297 optarg);
298 break;
299 case 'f':
300 if ((fsize = atoi(optarg)) <= 0)
301 fatal("%s: bad fragment size", optarg);
302 break;
303 case 'g':
304 if ((avgfilesize = atoi(optarg)) <= 0)
305 fatal("%s: bad average file size", optarg);
306 break;
307 case 'h':
308 if ((avgfilesperdir = atoi(optarg)) <= 0)
309 fatal("%s: bad average files per dir", optarg);
310 break;
311 case 'i':
312 if ((density = atoi(optarg)) <= 0)
313 fatal("%s: bad bytes per inode", optarg);
314 break;
315 case 'k':
316 if ((trackskew = atoi(optarg)) < 0)
317 fatal("%s: bad track skew", optarg);
318 break;
319 case 'l':
320 if ((interleave = atoi(optarg)) <= 0)
321 fatal("%s: bad interleave", optarg);
322 break;
323 case 'm':
324 if ((minfree = atoi(optarg)) < 0 || minfree > 99)
325 fatal("%s: bad free space %%", optarg);
326 break;
327 case 'n':
328 if ((nrpos = atoi(optarg)) < 0)
329 fatal("%s: bad rotational layout count",
330 optarg);
331 if (nrpos == 0)
332 nrpos = 1;
333 break;
334 case 'o':
335 if (mfs)
336 getmntopts(optarg, mopts, &mntflags, 0);
337 else {
338 if (strcmp(optarg, "space") == 0)
339 opt = FS_OPTSPACE;
340 else if (strcmp(optarg, "time") == 0)
341 opt = FS_OPTTIME;
342 else
343 fatal("%s: unknown optimization preference: use `space' or `time'", optarg);
344 }
345 break;
346 case 'p':
347 if ((trackspares = atoi(optarg)) < 0)
348 fatal("%s: bad spare sectors per track",
349 optarg);
350 break;
351 case 'r':
352 if ((rpm = atoi(optarg)) <= 0)
353 fatal("%s: bad revolutions/minute", optarg);
354 break;
355 case 's':
356 /*
357 * Unsigned long but limit to long. On 32 bit a
358 * tad under 2G, on 64 bit the upper bound is more
359 * swap space then operand size.
360 *
361 * NOTE: fssize is converted from 512 byte sectors
362 * to filesystem block-sized sectors by mkfs XXX.
363 */
364 fssize = strtoul(optarg, NULL, 10);
365 if (fssize == 0 || fssize > LONG_MAX)
366 fatal("%s: bad file system size", optarg);
367 break;
368 case 't':
369 t_or_u_flag++;
370 if ((ntracks = atoi(optarg)) < 0)
371 fatal("%s: bad total tracks", optarg);
372 break;
373 case 'u':
374 t_or_u_flag++;
375 if ((nsectors = atoi(optarg)) < 0)
376 fatal("%s: bad sectors/track", optarg);
377 break;
378 case 'v':
379 vflag = 1;
380 break;
381 case 'x':
382 if ((cylspares = atoi(optarg)) < 0)
383 fatal("%s: bad spare sectors per cylinder",
384 optarg);
385 break;
386 case '?':
387 default:
388 usage();
389 }
390 }
391 argc -= optind;
392 argv += optind;
393
394 if (argc != 2 && (mfs || argc != 1))
395 usage();
396
397 special = argv[0];
398 /* Copy the NetBSD way of faking up a disk label */
399 if (mfs && !strcmp(special, "swap")) {
400 /*
401 * it's an MFS, mounted on "swap." fake up a label.
402 * XXX XXX XXX
403 */
404 fso = -1; /* XXX; normally done below. */
405
406 geom.d_media_blksize = 512;
407 geom.d_nheads = 16;
408 geom.d_secpertrack = 64;
409 /* geom.d_ncylinders not used */
410 geom.d_secpercyl = 1024;
411 geom.d_media_blocks = 16384;
412 geom.d_rpm = 3600;
413 geom.d_interleave = 1;
414
415 goto havelabel;
416 }
417
418 /*
419 * If we can't stat the device and the path is relative, try
420 * prepending /dev.
421 */
422 if (stat(special, &st) < 0 && special[0] && special[0] != '/')
423 asprintf(&special, "/dev/%s", special);
424
425 if (Eflag) {
426 char sysctl_name[64];
427 int trim_enabled = 0;
428 size_t olen = sizeof(trim_enabled);
429 char *dev_name = strdup(special);
430
431 dev_name = strtok(dev_name + strlen("/dev/da"),"s");
432 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled",
433 dev_name);
434
435 if (sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0) < 0) {
436 printf("Device:%s does not support the TRIM command\n",
437 special);
438 usage();
439 }
440 if(!trim_enabled) {
441 printf("Erase device option selected, but sysctl (%s) "
442 "is not enabled\n",sysctl_name);
443 usage();
444
445 }
446 }
447 if (Nflag) {
448 fso = -1;
449 } else {
450 fso = open(special, O_WRONLY);
451 if (fso < 0)
452 fatal("%s: %s", special, strerror(errno));
453
454 /* Bail if target special is mounted */
455 n = getmntinfo(&mp, MNT_NOWAIT);
456 if (n == 0)
457 fatal("%s: getmntinfo: %s", special, strerror(errno));
458
459 len = sizeof(_PATH_DEV) - 1;
460 s1 = special;
461 if (strncmp(_PATH_DEV, s1, len) == 0)
462 s1 += len;
463
464 while (--n >= 0) {
465 s2 = mp->f_mntfromname;
466 if (strncmp(_PATH_DEV, s2, len) == 0) {
467 s2 += len - 1;
468 *s2 = 'r';
469 }
470 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0)
471 fatal("%s is mounted on %s",
472 special, mp->f_mntonname);
473 ++mp;
474 }
475 }
476 if (mfs && disktype != NULL) {
477 struct disktab *dt;
478
479 if ((dt = getdisktabbyname(disktype)) == NULL)
480 fatal("%s: unknown disk type", disktype);
481 geom = *dt;
482 } else {
483 struct partinfo pinfo;
484
485 if (special[0] == 0)
486 fatal("null special file name");
487 fsi = open(special, O_RDONLY);
488 if (fsi < 0)
489 fatal("%s: %s", special, strerror(errno));
490 if (fstat(fsi, &st) < 0)
491 fatal("%s: %s", special, strerror(errno));
492 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag)
493 printf("%s: %s: not a character-special device\n",
494 progname, special);
495 #ifdef COMPAT
496 if (!mfs && disktype == NULL)
497 disktype = argv[1];
498 #endif
499 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) {
500 if (!vflag) {
501 fatal("%s: unable to retrieve geometry "
502 "information", argv[0]);
503 }
504 /*
505 * fake up geometry data
506 */
507 geom.d_media_blksize = 512;
508 geom.d_nheads = 16;
509 geom.d_secpertrack = 64;
510 geom.d_secpercyl = 1024;
511 geom.d_media_blocks = st.st_size /
512 geom.d_media_blksize;
513 geom.d_media_size = geom.d_media_blocks *
514 geom.d_media_blksize;
515 /* geom.d_ncylinders not used */
516 } else {
517 /*
518 * extract geometry from pinfo
519 */
520 geom.d_media_blksize = pinfo.media_blksize;
521 geom.d_nheads = pinfo.d_nheads;
522 geom.d_secpertrack = pinfo.d_secpertrack;
523 geom.d_secpercyl = pinfo.d_secpercyl;
524 /* geom.d_ncylinders not used */
525 geom.d_media_blocks = pinfo.media_blocks;
526 geom.d_media_size = pinfo.media_size;
527 slice_offset = pinfo.media_offset;
528 }
529 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) {
530 fatal("%s: is unavailable", argv[0]);
531 }
532 printf("%s: media size %6.2fMB\n",
533 argv[0], geom.d_media_size / 1024.0 / 1024.0);
534 if (geom.d_media_size / 512 >= 0x80000000ULL)
535 fatal("%s: media size is too large for newfs to handle",
536 argv[0]);
537 }
538 havelabel:
539 if (fssize == 0)
540 fssize = geom.d_media_blocks;
541 if ((u_long)fssize > geom.d_media_blocks && !mfs) {
542 fatal("%s: maximum file system size is %" PRIu64 " blocks",
543 argv[0], geom.d_media_blocks);
544 }
545 if (rpm == 0) {
546 rpm = geom.d_rpm;
547 if (rpm <= 0)
548 rpm = 3600;
549 }
550 if (ntracks == 0) {
551 ntracks = geom.d_nheads;
552 if (ntracks <= 0)
553 fatal("%s: no default #tracks", argv[0]);
554 }
555 if (nsectors == 0) {
556 nsectors = geom.d_secpertrack;
557 if (nsectors <= 0)
558 fatal("%s: no default #sectors/track", argv[0]);
559 }
560 if (sectorsize == 0) {
561 sectorsize = geom.d_media_blksize;
562 if (sectorsize <= 0)
563 fatal("%s: no default sector size", argv[0]);
564 }
565 if (trackskew == -1) {
566 trackskew = geom.d_trackskew;
567 if (trackskew < 0)
568 trackskew = 0;
569 }
570 if (interleave == 0) {
571 interleave = geom.d_interleave;
572 if (interleave <= 0)
573 interleave = 1;
574 }
575 if (fsize == 0)
576 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize);
577 if (bsize == 0)
578 bsize = MIN(DFL_BLKSIZE, 8 * fsize);
579 /*
580 * Maxcontig sets the default for the maximum number of blocks
581 * that may be allocated sequentially. With filesystem clustering
582 * it is possible to allocate contiguous blocks up to the maximum
583 * transfer size permitted by the controller or buffering.
584 */
585 if (maxcontig == 0)
586 maxcontig = MAX(1, MAXPHYS / bsize - 1);
587 if (density == 0)
588 density = NFPI * fsize;
589 if (minfree < MINFREE && opt != FS_OPTSPACE) {
590 fprintf(stderr, "Warning: changing optimization to space ");
591 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE);
592 opt = FS_OPTSPACE;
593 }
594 if (trackspares == -1)
595 trackspares = 0;
596 nphyssectors = nsectors + trackspares;
597 if (cylspares == -1)
598 cylspares = 0;
599 secpercyl = nsectors * ntracks - cylspares;
600 /*
601 * Only complain if -t or -u have been specified; the default
602 * case (4096 sectors per cylinder) is intended to disagree
603 * with the disklabel.
604 */
605 if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl)
606 fprintf(stderr, "%s (%d) %s (%u)\n",
607 "Warning: calculated sectors per cylinder", secpercyl,
608 "disagrees with disk label", geom.d_secpercyl);
609 if (maxbpg == 0)
610 maxbpg = MAXBLKPG(bsize);
611 headswitch = geom.d_headswitch;
612 trackseek = geom.d_trkseek;
613 realsectorsize = sectorsize;
614 if (sectorsize != DEV_BSIZE) { /* XXX */
615 int secperblk = sectorsize / DEV_BSIZE;
616
617 sectorsize = DEV_BSIZE;
618 nsectors *= secperblk;
619 nphyssectors *= secperblk;
620 secpercyl *= secperblk;
621 fssize *= secperblk;
622 }
623 if (mfs) {
624 mfs_mtpt = argv[1];
625 if (
626 stat(mfs_mtpt, &mfs_mtstat) < 0 ||
627 !S_ISDIR(mfs_mtstat.st_mode)
628 ) {
629 fatal("mount point not dir: %s", mfs_mtpt);
630 }
631 }
632 mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL);
633
634 /*
635 * NOTE: Newfs no longer accesses or attempts to update the
636 * filesystem disklabel.
637 *
638 * NOTE: fssize is converted from 512 byte sectors
639 * to filesystem block-sized sectors by mkfs XXX.
640 */
641 if (!Nflag)
642 close(fso);
643 close(fsi);
644 #ifdef MFS
645 if (mfs) {
646 struct mfs_args args;
647
648 bzero(&args, sizeof(args));
649
650 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d",
651 getpid());
652 args.fspec = mfsdevname;
653 args.export.ex_root = -2;
654 if (mntflags & MNT_RDONLY)
655 args.export.ex_flags = MNT_EXRDONLY;
656 else
657 args.export.ex_flags = 0;
658 args.base = membase;
659 args.size = fssize * fsize;
660
661 error = getvfsbyname("mfs", &vfc);
662 if (error && vfsisloadable("mfs")) {
663 if (vfsload("mfs"))
664 fatal("vfsload(mfs)");
665 endvfsent(); /* flush cache */
666 error = getvfsbyname("mfs", &vfc);
667 }
668 if (error)
669 fatal("mfs filesystem not available");
670
671 #if 0
672 int udev;
673 udev = (253 << 8) | (getpid() & 255) |
674 ((getpid() & ~0xFF) << 8);
675 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0)
676 printf("Warning: unable to create %s\n", mfsdevname);
677 #endif
678 signal(SIGINT, mfsintr);
679 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0)
680 fatal("%s: %s", argv[1], strerror(errno));
681 signal(SIGINT, SIG_DFL);
682 mfsintr(SIGINT);
683 }
684 #endif
685 exit(0);
686 }
687
688 #ifdef MFS
689
690 static void
mfsintr(__unused int signo)691 mfsintr(__unused int signo)
692 {
693 if (filename)
694 munmap(membase, fssize * fsize);
695 #if 0
696 remove(mfsdevname);
697 #endif
698 }
699
700 #endif
701
702 /*VARARGS*/
703 void
fatal(const char * fmt,...)704 fatal(const char *fmt, ...)
705 {
706 va_list ap;
707
708 va_start(ap, fmt);
709 if (fcntl(STDERR_FILENO, F_GETFL) < 0) {
710 openlog(progname, LOG_CONS, LOG_DAEMON);
711 vsyslog(LOG_ERR, fmt, ap);
712 closelog();
713 } else {
714 vwarnx(fmt, ap);
715 }
716 va_end(ap);
717 exit(1);
718 /*NOTREACHED*/
719 }
720
721 void
usage(void)722 usage(void)
723 {
724 if (mfs) {
725 fprintf(stderr,
726 "usage: %s [ -fsoptions ] special-device mount-point\n",
727 progname);
728 } else
729 fprintf(stderr,
730 "usage: %s [ -fsoptions ] special-device%s\n",
731 progname,
732 #ifdef COMPAT
733 " [device-type]");
734 #else
735 "");
736 #endif
737 fprintf(stderr, "where fsoptions are:\n");
738 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n");
739 fprintf(stderr, "\t-E erase file system contents using TRIM\n");
740 fprintf(stderr, "\t-L volume name\n");
741 fprintf(stderr,
742 "\t-N do not create file system, just print out parameters\n");
743 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n");
744 fprintf(stderr, "\t-S sector size\n");
745 #ifdef COMPAT
746 fprintf(stderr, "\t-T disktype\n");
747 #endif
748 fprintf(stderr, "\t-U enable soft updates\n");
749 fprintf(stderr, "\t-a maximum contiguous blocks\n");
750 fprintf(stderr, "\t-b block size\n");
751 fprintf(stderr, "\t-c cylinders/group\n");
752 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n");
753 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n");
754 fprintf(stderr, "\t-f frag size\n");
755 fprintf(stderr, "\t-g average file size\n");
756 fprintf(stderr, "\t-h average files per directory\n");
757 fprintf(stderr, "\t-i number of bytes per inode\n");
758 fprintf(stderr, "\t-k sector 0 skew, per track\n");
759 fprintf(stderr, "\t-l hardware sector interleave\n");
760 fprintf(stderr, "\t-m minimum free space %%\n");
761 fprintf(stderr, "\t-n number of distinguished rotational positions\n");
762 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n");
763 fprintf(stderr, "\t-p spare sectors per track\n");
764 fprintf(stderr, "\t-s file system size (sectors)\n");
765 fprintf(stderr, "\t-r revolutions/minute\n");
766 fprintf(stderr, "\t-t tracks/cylinder\n");
767 fprintf(stderr, "\t-u sectors/track\n");
768 fprintf(stderr,
769 "\t-v do not attempt to determine partition name from device name\n");
770 fprintf(stderr, "\t-x spare sectors per cylinder\n");
771 exit(1);
772 }
773